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LibWeb: Don't advertise the empty string as HTMLCollection property name

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This fixes wpt/dom/collections/HTMLCollection-empty-name.html
This commit is contained in:
Andreas Kling 2024-05-27 10:47:19 +02:00
commit e7febd347b
Notes: sideshowbarker 2024-07-17 04:09:56 +09:00
3 changed files with 13 additions and 1 deletions
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2
Tests/LibWeb/Text/expected/DOM/HTMLCollection-empty-string-as-property-name.txt Normal file
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@ -0,0 +1,2 @@
Empty string in collection: false
'haxx' in collection: true

10
Tests/LibWeb/Text/input/DOM/HTMLCollection-empty-string-as-property-name.html Normal file
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@ -0,0 +1,10 @@
<script src="../include.js"></script>
<div id></div>
<div id=haxx></div>
<script>
test(() => {
var c = document.getElementsByTagName("*");
println("Empty string in collection: " + ("" in c));
println("'haxx' in collection: " + ("haxx" in c));
});
</script>

2
Userland/Libraries/LibWeb/DOM/HTMLCollection.cpp
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@ -135,7 +135,7 @@ Vector<FlyString> HTMLCollection::supported_property_names() const
for (auto const& element : m_cached_elements) { for (auto const& element : m_cached_elements) {
// 1. If element has an ID which is not in result, append element’s ID to result. // 1. If element has an ID which is not in result, append element’s ID to result.
if (auto const& id = element->id(); id.has_value()) { if (auto const& id = element->id(); id.has_value()) {
if (!result.contains_slow(id.value())) if (!id.value().is_empty() && !result.contains_slow(id.value()))
result.append(id.value()); result.append(id.value());
} }